why does Arc mic turns on and off on its on regularly?

Did you ever figure out this issue? I am experiencing the same thing. I have a Sonos Arc hooked up to an LG C1 TV via HDMI eARC, and am using Alexa as my voice assistant. When audio is coming from the TV, I hear the microphone turning itself on and off. It happens randomly, usually every few minutes though.

Hello there, same issue here. Sonos ARC turned the mic on and off randomly. Connected to Sony oled tv with eARC.  Played music on spotify (tv off). 
This happens one week after installation of the sonos system and today i used Trueplay. Before Trueplay no issue. Is this the cause of turning the mic on and off on the ARC? On the Era300’s all fine. 

Same here. Arc linked to Amazon Alexa for voice assistant. Mic enable/disable sound happens intermittently when listing to music. TV is powered off. 
 

Removing Alexa Voice assistant as a test and will report back. 

I have an LG C3 65 connected to Arc and Amazon Alexa. The mic randomly keeps coming off and on. I have turned roofer, arc, tv etc off and on, reset and reinstalled everything and it keeps happening. Does anyone have a suggested solution?

Yes, it is  probably best to reproduce the issue, then submit a Sonos system diagnostic report from within the Sonos App, note it’s reference and then contact/chat with Sonos Support Staff via this LINK and see what the Staff can perhaps suggest to resolve the matter.

It appears that some users with this type of issue have had their Arc replaced due to a fault, but the Staff will likely need to check things with you first in case it’s just a software issue that can perhaps be quickly resolved.

Same issue with new ARC (white model, 1 day old). As soon as the Sub is added to the sourround set or the touch contol is disabled by app it works.  If touch in enabled (no one touch) the microphone will be disabled randomly by self. Used in the past BeamGen1, no issues.

Tried with some sticker on the touch sensor for the microphone but does not help.

Is it hardware issue or software bug ?

Diagnose ID 1850850345

The same thing happens to my Arc and apparently this is a very common issue with a frustrating workaround. Turning off touch controls fixes the problem, but I would like to use them. My wife keeps trying to convince me to send the Arc back. :(

Just purchased Arc and have the same issue. The only way I am able to resolve this issue is to turn the touch controls off. What a shame we must eliminate a feature to eliminate a Sonos defect. 

I’m experiencing the same problem with a new ARC. The issue started right after I installed it. I’m using Google Assistant.

@Smart10 & @jmoose,

It is probably best to reproduce the issue, then submit a Sonos system diagnostic report from within the Sonos App, note it’s reference and then contact/chat with Sonos Support Staff via this LINK and see what the Staff can perhaps suggest to resolve the matter.

It appears that some users with this type of issue have had their Arc replaced due to a fault, but the Staff will likely need to check things with you first in case it’s just a software issue that can perhaps be quickly resolved.